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A Wideband Low Phase-Noise LC-VCO With Programmable KVCO

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3 Author(s)
Broussev, S.S. ; Inst. of Commun. Eng., Tampere Univ. of Technol. ; Lehtonen, T.A. ; Tchamov, N.T.

A programmable voltage-controlled oscillator (VCO) gain scheme is introduced to equalize the analog tuning range across the frequency range of a wideband VCO. The programmable VCO gain gives a possibility to trade VCO gain for phase noise performance. The test chip fabricated on a standard 130-nm CMOS technology achieves a measured phase noise of -126.8dBc/Hz and -126.0dBc/Hz at 1-MHz offset from 3.6-GHz and 4.0-GHz carriers, respectively. The VCO consumes less than 6mA from a 1.8-V power supply

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:17 ,  Issue: 4 )